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English definition of “goof”

goof

verb [I or T]   /ɡuːf/ mainly US informal
to make a silly mistake: If Tom hadn't goofed and missed that shot, we'd have won the game. She goofed her lines (= said the words in the play wrong).Making mistakes
(Definition of goof verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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